Publications by authors named "C M Vollmer"
Background: Ampullary adenocarcinoma (AAC) typically presents at an early stage due to biliary obstruction and therefore might be specifically suitable for minimally invasive pancreatoduodenectomy (MIPD). However, studies assessing MIPD specifically for AAC, including the robotic and laparoscopic approach, are limited. The aim of this study is to compare short- and long-term oncological resection and perioperative outcomes of robotic (RPD), laparoscopic (LPD) and open pancreatoduodenectomy (OPD) performed specifically for AAC.
View Article and Find Full Text PDFObjective: Ampullary neoplastic lesions can be resected by endoscopic papillectomy (EP) or transduodenal surgical ampullectomy (TSA) while pancreaticoduodenectomy is reserved for more advanced lesions. We present the largest retrospective comparative study analysing EP and TSA.
Design: Of all patients in the database, lesions with prior interventions, benign histology advanced malignancy (T2 and more), patients with hereditary syndromes and those undergoing pancreatoduodenectomy were excluded.
Introduction: The management of recurrent pancreatic neuroendocrine tumors has changed with improvements in both systemic and locoregional therapies. This study aims to describe the patterns of recurrence and respective treatments and evaluate the changes in multimodality treatment.
Methods: This is a single-institution retrospective study of patients diagnosed with a pancreatic neuroendocrine tumor from 2004 to 2022.
Systemic vasodilating agents like nitroglycerin (NG) or iloprost (Ilo) show beneficial effects on intestinal microcirculation during sepsis, which could be attenuated by activation of the sympathetic nervous system or systemic side effects of vasodilating agents. This exploratory study aimed to investigate the effects of topically administered vasodilators and the parasympathetic drug carbachol on colonic microcirculatory oxygenation (µHbO), blood flow (µFlow) and mitochondrial respiration. A total of 120 male Wistar rats were randomly assigned to twelve groups and underwent either colon ascendens stent peritonitis (CASP) or sham surgery.
View Article and Find Full Text PDFArticle Synopsis
- Ampullary adenocarcinoma (AA) shows clinical and genetic diversity, and a new genomic classifier may improve patient classification beyond traditional methods, but it needs validation before being widely used.
- A study involving 192 patients with AA assessed the accuracy of this genomic classifier against standard histology to see if it could predict survival outcomes.
- Results indicated a 55% agreement between genomic and histological classifications; however, while histological subtypes did not predict survival, the genomic scores did correlate with survival probabilities, suggesting the genomic approach might be more effective.